Mammoth 12V 344Ah Lithium Battery

Massive Power. Extreme Runtime. Built Like a Monster.

When you need a battery that delivers maximum capacity, extreme runtime, and uncompromising reliability, the Monster Marine Lithium Mammoth 12V 344Ah is built for the job.

Designed, tested, and engineered by Monster Marine Lithium, the Mammoth is unlike anything else on the market. Built using premium Grade A LiFePO4 cells, an advanced high-performance BMS system, and rugged internal construction, this battery is engineered to dominate the harshest marine, RV, solar, and off-grid environments.

Whether you're powering large marine electronics systems, trolling motors, golf carts, RV setups, or solar storage systems, the Mammoth delivers the power reserve and voltage stability serious users demand.

With an incredible 4000+ charge cycle lifespan, this battery can last up to 10x longer than traditional SLA batteries while providing lighter weight, faster charging, and significantly more usable power.

Why Choose the Mammoth 344Ah?

⚡ Huge 4,403Wh Power Capacity
Built for extended runtime and high-demand applications.

🔋 Premium Grade A LiFePO4 Cells
Only top-tier Lithium Iron Phosphate cells are used for maximum performance and reliability.

🧠 Advanced Battery Management System (BMS)
Protects against overcharge, over-discharge, overheating, and excessive current.

🛠 Rugged Internal Construction
Engineered to withstand harsh marine conditions and vibration.

📈 4000+ Charge Cycles
Up to 10x longer lifespan compared to traditional lead-acid batteries.

⚓ Steady Voltage Output
Perfect for sensitive marine electronics and sonar systems.

🔗 Expandable Power System
Run batteries in series or parallel for larger systems.

Ideal Applications

• Marine Electronics
• Forward Facing Sonar
• Bass Boats
• Trolling Motors
• RV Power Systems
• Solar Energy Storage
• Golf Carts
• Off-Grid Systems
• Electric Vehicles

Suitable For

✔ All 12V Electronics
✔ 12V Trolling Motors
✔ Minn Kota Trolling Motors
✔ Garmin Trolling Motors
✔ Lowrance Trolling Motors
✔ Rhodan Trolling Motors
✔ Ideal for ALL Trolling Motors
✔ Connect up to 4 batteries in series (24V / 36V / 48V systems)
✔ Unlimited parallel capability
✔ LiFePO4 replacement for SLA batteries

Compatible AGM Chargers

The following AGM-capable chargers are compatible with the Mammoth 12V 344Ah lithium battery:

• All Monster 12v chargers.
• Minn Kota Precision Chargers
• Minn Kota Digital Chargers
• Dual Pro
• NOCO
• Real Pro
• Pro Sport

⚠️ Chargers must have AGM charging capabilities.

Specifications

What Makes Monster Marine Lithium Different?

Monster Marine Lithium batteries are built for anglers and outdoorsmen who demand more from their power systems.

Our batteries are engineered with:

• Premium Grade A cells
• High-performance BMS protection
• Rugged internal support structure
• Extreme vibration resistance
• Real-world marine testing

This is not a generic lithium battery — this is a professionally engineered high-capacity power system designed to outperform and outlast.